The Limits of Custodial Symmetry

Details The Limits of Custodial Symmetry The Limits of Custodial Symmetry

2010-09-13

arxiv.org/abs/1009.2477v1

Int.J.Mod.Phys.A25:5082-5096,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 included eps figures. Talk presented by RSC at 22nd Recontres de Blois, July 15-20, 2010

Scientific paper

10.1142/S0217751X10050871

We introduce a toy model implementing the proposal of using a custodial symmetry to protect the Zbb coupling from large corrections. This "doublet-extended standard model" adds a weak doublet of fermions (including a heavy partner of the top quark) to the particle content of the standard model in order to implement an O(4) x U(1)_X = SU(2)_L x SU(2)_R x P_{LR} x U(1)_X symmetry that protects the Zbb coupling. This symmetry is softly broken to the gauged SU(2)_L x U(1)_Y electroweak symmetry by a Dirac mass M for the new doublet; adjusting the value of M allows us to explore the range of possibilities between the O(4)-symmetric (M to 0) and standard-model-like (M to infinity) limits.

Affiliated with

Also associated with

No associations

Rating

The Limits of Custodial Symmetry does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Limits of Custodial Symmetry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Limits of Custodial Symmetry will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-338249